/usr/bin/java -ea -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.use.separate.solver.for.trace.checks true -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/recursive/Addition02.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-46f3038-m [2020-07-08 21:49:03,146 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-08 21:49:03,149 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-08 21:49:03,167 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-08 21:49:03,168 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-08 21:49:03,170 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-08 21:49:03,172 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-08 21:49:03,182 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-08 21:49:03,185 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-08 21:49:03,189 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-08 21:49:03,192 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-08 21:49:03,194 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-08 21:49:03,194 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-08 21:49:03,196 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-08 21:49:03,199 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-08 21:49:03,200 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-08 21:49:03,202 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-08 21:49:03,203 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-08 21:49:03,205 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-08 21:49:03,210 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-08 21:49:03,215 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-08 21:49:03,219 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-08 21:49:03,220 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-08 21:49:03,221 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-08 21:49:03,223 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-08 21:49:03,236 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-08 21:49:03,237 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-08 21:49:03,238 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-08 21:49:03,239 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-07-08 21:49:03,259 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-08 21:49:03,259 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-08 21:49:03,268 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-08 21:49:03,268 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-08 21:49:03,268 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-08 21:49:03,269 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-08 21:49:03,269 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-08 21:49:03,269 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-08 21:49:03,269 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-08 21:49:03,269 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-08 21:49:03,270 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-08 21:49:03,270 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-08 21:49:03,270 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-08 21:49:03,274 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-08 21:49:03,275 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-08 21:49:03,275 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-07-08 21:49:03,275 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-08 21:49:03,275 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-08 21:49:03,276 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-08 21:49:03,276 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-08 21:49:03,276 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-07-08 21:49:03,276 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-08 21:49:03,276 INFO L138 SettingsManager]: * Use separate solver for trace checks=false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2020-07-08 21:49:03,573 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-08 21:49:03,587 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-08 21:49:03,591 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-08 21:49:03,593 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-08 21:49:03,593 INFO L275 PluginConnector]: CDTParser initialized [2020-07-08 21:49:03,594 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive/Addition02.c [2020-07-08 21:49:03,683 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f991616b4/04a80056739d467ca007a3512c26594c/FLAG1aa2955e2 [2020-07-08 21:49:04,171 INFO L306 CDTParser]: Found 1 translation units. [2020-07-08 21:49:04,172 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/recursive/Addition02.c [2020-07-08 21:49:04,179 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f991616b4/04a80056739d467ca007a3512c26594c/FLAG1aa2955e2 [2020-07-08 21:49:04,538 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f991616b4/04a80056739d467ca007a3512c26594c [2020-07-08 21:49:04,549 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-08 21:49:04,551 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-08 21:49:04,552 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-08 21:49:04,553 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-08 21:49:04,556 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-08 21:49:04,558 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.07 09:49:04" (1/1) ... [2020-07-08 21:49:04,561 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5990b53 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 09:49:04, skipping insertion in model container [2020-07-08 21:49:04,562 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.07 09:49:04" (1/1) ... [2020-07-08 21:49:04,570 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-08 21:49:04,589 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-08 21:49:04,766 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-08 21:49:04,771 INFO L203 MainTranslator]: Completed pre-run [2020-07-08 21:49:04,791 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-08 21:49:04,807 INFO L208 MainTranslator]: Completed translation [2020-07-08 21:49:04,808 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 09:49:04 WrapperNode [2020-07-08 21:49:04,808 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-08 21:49:04,809 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-08 21:49:04,809 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-08 21:49:04,809 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-08 21:49:04,824 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 09:49:04" (1/1) ... [2020-07-08 21:49:04,824 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 09:49:04" (1/1) ... [2020-07-08 21:49:04,829 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 09:49:04" (1/1) ... [2020-07-08 21:49:04,830 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 09:49:04" (1/1) ... [2020-07-08 21:49:04,835 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 09:49:04" (1/1) ... [2020-07-08 21:49:04,838 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 09:49:04" (1/1) ... [2020-07-08 21:49:04,840 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 09:49:04" (1/1) ... [2020-07-08 21:49:04,841 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-08 21:49:04,842 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-08 21:49:04,842 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-08 21:49:04,842 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-08 21:49:04,843 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 09:49:04" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-08 21:49:05,005 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-08 21:49:05,005 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-08 21:49:05,005 INFO L138 BoogieDeclarations]: Found implementation of procedure addition [2020-07-08 21:49:05,005 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-08 21:49:05,005 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-08 21:49:05,006 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-08 21:49:05,006 INFO L130 BoogieDeclarations]: Found specification of procedure addition [2020-07-08 21:49:05,006 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-08 21:49:05,006 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-08 21:49:05,006 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-08 21:49:05,377 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-08 21:49:05,377 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-07-08 21:49:05,382 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.07 09:49:05 BoogieIcfgContainer [2020-07-08 21:49:05,382 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-08 21:49:05,383 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-08 21:49:05,383 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-08 21:49:05,387 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-08 21:49:05,387 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.07 09:49:04" (1/3) ... [2020-07-08 21:49:05,388 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cb6d296 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.07 09:49:05, skipping insertion in model container [2020-07-08 21:49:05,388 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 09:49:04" (2/3) ... [2020-07-08 21:49:05,389 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cb6d296 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.07 09:49:05, skipping insertion in model container [2020-07-08 21:49:05,389 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.07 09:49:05" (3/3) ... [2020-07-08 21:49:05,391 INFO L109 eAbstractionObserver]: Analyzing ICFG Addition02.c [2020-07-08 21:49:05,403 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-07-08 21:49:05,411 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-08 21:49:05,424 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-08 21:49:05,447 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-08 21:49:05,448 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-08 21:49:05,448 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-07-08 21:49:05,448 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-08 21:49:05,448 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-08 21:49:05,448 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-08 21:49:05,449 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-08 21:49:05,449 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-08 21:49:05,463 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states. [2020-07-08 21:49:05,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-07-08 21:49:05,474 INFO L414 BasicCegarLoop]: Found error trace [2020-07-08 21:49:05,475 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-08 21:49:05,476 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-08 21:49:05,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-08 21:49:05,482 INFO L82 PathProgramCache]: Analyzing trace with hash 935018920, now seen corresponding path program 1 times [2020-07-08 21:49:05,490 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-08 21:49:05,490 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [345110601] [2020-07-08 21:49:05,491 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-08 21:49:05,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-08 21:49:05,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-08 21:49:05,792 INFO L280 TraceCheckUtils]: 0: Hoare triple {45#true} assume true; {45#true} is VALID [2020-07-08 21:49:05,793 INFO L275 TraceCheckUtils]: 1: Hoare quadruple {45#true} {45#true} #58#return; {45#true} is VALID [2020-07-08 21:49:05,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-08 21:49:05,916 INFO L280 TraceCheckUtils]: 0: Hoare triple {45#true} ~m := #in~m; {58#(= |addition_#in~m| addition_~m)} is VALID [2020-07-08 21:49:05,918 INFO L280 TraceCheckUtils]: 1: Hoare triple {58#(= |addition_#in~m| addition_~m)} ~n := #in~n; {59#(and (= |addition_#in~n| addition_~n) (= |addition_#in~m| addition_~m))} is VALID [2020-07-08 21:49:05,919 INFO L280 TraceCheckUtils]: 2: Hoare triple {59#(and (= |addition_#in~n| addition_~n) (= |addition_#in~m| addition_~m))} assume 0 == ~n; {60#(and (= 0 |addition_#in~n|) (= |addition_#in~m| addition_~m))} is VALID [2020-07-08 21:49:05,920 INFO L280 TraceCheckUtils]: 3: Hoare triple {60#(and (= 0 |addition_#in~n|) (= |addition_#in~m| addition_~m))} #res := ~m; {61#(and (= 0 |addition_#in~n|) (= |addition_#in~m| |addition_#res|))} is VALID [2020-07-08 21:49:05,922 INFO L280 TraceCheckUtils]: 4: Hoare triple {61#(and (= 0 |addition_#in~n|) (= |addition_#in~m| |addition_#res|))} assume true; {61#(and (= 0 |addition_#in~n|) (= |addition_#in~m| |addition_#res|))} is VALID [2020-07-08 21:49:05,925 INFO L275 TraceCheckUtils]: 5: Hoare quadruple {61#(and (= 0 |addition_#in~n|) (= |addition_#in~m| |addition_#res|))} {49#(<= 0 main_~n~0)} #62#return; {56#(and (<= (+ |main_#t~ret4| main_~n~0) main_~m~0) (<= main_~m~0 (+ |main_#t~ret4| main_~n~0)))} is VALID [2020-07-08 21:49:05,926 INFO L263 TraceCheckUtils]: 0: Hoare triple {45#true} call ULTIMATE.init(); {45#true} is VALID [2020-07-08 21:49:05,927 INFO L280 TraceCheckUtils]: 1: Hoare triple {45#true} assume true; {45#true} is VALID [2020-07-08 21:49:05,927 INFO L275 TraceCheckUtils]: 2: Hoare quadruple {45#true} {45#true} #58#return; {45#true} is VALID [2020-07-08 21:49:05,928 INFO L263 TraceCheckUtils]: 3: Hoare triple {45#true} call #t~ret5 := main(); {45#true} is VALID [2020-07-08 21:49:05,928 INFO L280 TraceCheckUtils]: 4: Hoare triple {45#true} assume -2147483648 <= #t~nondet2 && #t~nondet2 <= 2147483647; {45#true} is VALID [2020-07-08 21:49:05,929 INFO L280 TraceCheckUtils]: 5: Hoare triple {45#true} ~m~0 := #t~nondet2; {45#true} is VALID [2020-07-08 21:49:05,929 INFO L280 TraceCheckUtils]: 6: Hoare triple {45#true} havoc #t~nondet2; {45#true} is VALID [2020-07-08 21:49:05,930 INFO L280 TraceCheckUtils]: 7: Hoare triple {45#true} assume !(~m~0 < 0 || ~m~0 > 1073741823); {45#true} is VALID [2020-07-08 21:49:05,930 INFO L280 TraceCheckUtils]: 8: Hoare triple {45#true} assume -2147483648 <= #t~nondet3 && #t~nondet3 <= 2147483647; {45#true} is VALID [2020-07-08 21:49:05,932 INFO L280 TraceCheckUtils]: 9: Hoare triple {45#true} ~n~0 := #t~nondet3; {45#true} is VALID [2020-07-08 21:49:05,933 INFO L280 TraceCheckUtils]: 10: Hoare triple {45#true} havoc #t~nondet3; {45#true} is VALID [2020-07-08 21:49:05,934 INFO L280 TraceCheckUtils]: 11: Hoare triple {45#true} assume !(~n~0 < 0 || ~n~0 > 1073741823); {49#(<= 0 main_~n~0)} is VALID [2020-07-08 21:49:05,934 INFO L263 TraceCheckUtils]: 12: Hoare triple {49#(<= 0 main_~n~0)} call #t~ret4 := addition(~m~0, ~n~0); {45#true} is VALID [2020-07-08 21:49:05,936 INFO L280 TraceCheckUtils]: 13: Hoare triple {45#true} ~m := #in~m; {58#(= |addition_#in~m| addition_~m)} is VALID [2020-07-08 21:49:05,937 INFO L280 TraceCheckUtils]: 14: Hoare triple {58#(= |addition_#in~m| addition_~m)} ~n := #in~n; {59#(and (= |addition_#in~n| addition_~n) (= |addition_#in~m| addition_~m))} is VALID [2020-07-08 21:49:05,938 INFO L280 TraceCheckUtils]: 15: Hoare triple {59#(and (= |addition_#in~n| addition_~n) (= |addition_#in~m| addition_~m))} assume 0 == ~n; {60#(and (= 0 |addition_#in~n|) (= |addition_#in~m| addition_~m))} is VALID [2020-07-08 21:49:05,939 INFO L280 TraceCheckUtils]: 16: Hoare triple {60#(and (= 0 |addition_#in~n|) (= |addition_#in~m| addition_~m))} #res := ~m; {61#(and (= 0 |addition_#in~n|) (= |addition_#in~m| |addition_#res|))} is VALID [2020-07-08 21:49:05,941 INFO L280 TraceCheckUtils]: 17: Hoare triple {61#(and (= 0 |addition_#in~n|) (= |addition_#in~m| |addition_#res|))} assume true; {61#(and (= 0 |addition_#in~n|) (= |addition_#in~m| |addition_#res|))} is VALID [2020-07-08 21:49:05,943 INFO L275 TraceCheckUtils]: 18: Hoare quadruple {61#(and (= 0 |addition_#in~n|) (= |addition_#in~m| |addition_#res|))} {49#(<= 0 main_~n~0)} #62#return; {56#(and (<= (+ |main_#t~ret4| main_~n~0) main_~m~0) (<= main_~m~0 (+ |main_#t~ret4| main_~n~0)))} is VALID [2020-07-08 21:49:05,945 INFO L280 TraceCheckUtils]: 19: Hoare triple {56#(and (<= (+ |main_#t~ret4| main_~n~0) main_~m~0) (<= main_~m~0 (+ |main_#t~ret4| main_~n~0)))} assume -2147483648 <= #t~ret4 && #t~ret4 <= 2147483647; {56#(and (<= (+ |main_#t~ret4| main_~n~0) main_~m~0) (<= main_~m~0 (+ |main_#t~ret4| main_~n~0)))} is VALID [2020-07-08 21:49:05,946 INFO L280 TraceCheckUtils]: 20: Hoare triple {56#(and (<= (+ |main_#t~ret4| main_~n~0) main_~m~0) (<= main_~m~0 (+ |main_#t~ret4| main_~n~0)))} ~result~0 := #t~ret4; {57#(and (<= main_~m~0 (+ main_~result~0 main_~n~0)) (<= (+ main_~result~0 main_~n~0) main_~m~0))} is VALID [2020-07-08 21:49:05,948 INFO L280 TraceCheckUtils]: 21: Hoare triple {57#(and (<= main_~m~0 (+ main_~result~0 main_~n~0)) (<= (+ main_~result~0 main_~n~0) main_~m~0))} havoc #t~ret4; {57#(and (<= main_~m~0 (+ main_~result~0 main_~n~0)) (<= (+ main_~result~0 main_~n~0) main_~m~0))} is VALID [2020-07-08 21:49:05,949 INFO L280 TraceCheckUtils]: 22: Hoare triple {57#(and (<= main_~m~0 (+ main_~result~0 main_~n~0)) (<= (+ main_~result~0 main_~n~0) main_~m~0))} assume !(~result~0 == ~m~0 - ~n~0); {46#false} is VALID [2020-07-08 21:49:05,950 INFO L280 TraceCheckUtils]: 23: Hoare triple {46#false} assume !false; {46#false} is VALID [2020-07-08 21:49:05,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-08 21:49:05,955 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [345110601] [2020-07-08 21:49:05,957 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-08 21:49:05,957 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-07-08 21:49:05,958 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608922814] [2020-07-08 21:49:05,966 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 24 [2020-07-08 21:49:05,969 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-08 21:49:05,973 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 9 states. [2020-07-08 21:49:06,018 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 24 edges. 24 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-08 21:49:06,018 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-07-08 21:49:06,019 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-08 21:49:06,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-07-08 21:49:06,029 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-07-08 21:49:06,032 INFO L87 Difference]: Start difference. First operand 42 states. Second operand 9 states. [2020-07-08 21:49:06,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-08 21:49:06,784 INFO L93 Difference]: Finished difference Result 56 states and 65 transitions. [2020-07-08 21:49:06,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-07-08 21:49:06,784 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 24 [2020-07-08 21:49:06,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-08 21:49:06,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-07-08 21:49:06,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 65 transitions. [2020-07-08 21:49:06,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-07-08 21:49:06,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 65 transitions. [2020-07-08 21:49:06,803 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 10 states and 65 transitions. [2020-07-08 21:49:06,892 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 65 edges. 65 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-08 21:49:06,907 INFO L225 Difference]: With dead ends: 56 [2020-07-08 21:49:06,907 INFO L226 Difference]: Without dead ends: 37 [2020-07-08 21:49:06,918 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2020-07-08 21:49:06,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-07-08 21:49:07,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2020-07-08 21:49:07,047 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-08 21:49:07,048 INFO L82 GeneralOperation]: Start isEquivalent. First operand 37 states. Second operand 37 states. [2020-07-08 21:49:07,049 INFO L74 IsIncluded]: Start isIncluded. First operand 37 states. Second operand 37 states. [2020-07-08 21:49:07,049 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 37 states. [2020-07-08 21:49:07,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-08 21:49:07,061 INFO L93 Difference]: Finished difference Result 37 states and 42 transitions. [2020-07-08 21:49:07,061 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 42 transitions. [2020-07-08 21:49:07,063 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-08 21:49:07,064 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-08 21:49:07,064 INFO L74 IsIncluded]: Start isIncluded. First operand 37 states. Second operand 37 states. [2020-07-08 21:49:07,064 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 37 states. [2020-07-08 21:49:07,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-08 21:49:07,084 INFO L93 Difference]: Finished difference Result 37 states and 42 transitions. [2020-07-08 21:49:07,084 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 42 transitions. [2020-07-08 21:49:07,087 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-08 21:49:07,087 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-08 21:49:07,087 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-08 21:49:07,088 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-08 21:49:07,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-07-08 21:49:07,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 42 transitions. [2020-07-08 21:49:07,097 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 42 transitions. Word has length 24 [2020-07-08 21:49:07,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-08 21:49:07,099 INFO L479 AbstractCegarLoop]: Abstraction has 37 states and 42 transitions. [2020-07-08 21:49:07,099 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-07-08 21:49:07,099 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 37 states and 42 transitions. [2020-07-08 21:49:07,173 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 42 edges. 42 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-08 21:49:07,173 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 42 transitions. [2020-07-08 21:49:07,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-07-08 21:49:07,175 INFO L414 BasicCegarLoop]: Found error trace [2020-07-08 21:49:07,176 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-08 21:49:07,176 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-08 21:49:07,176 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-08 21:49:07,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-08 21:49:07,177 INFO L82 PathProgramCache]: Analyzing trace with hash 2135506668, now seen corresponding path program 1 times [2020-07-08 21:49:07,179 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-08 21:49:07,180 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [458671764] [2020-07-08 21:49:07,181 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-08 21:49:07,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-08 21:49:07,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-08 21:49:07,237 INFO L280 TraceCheckUtils]: 0: Hoare triple {334#true} assume true; {334#true} is VALID [2020-07-08 21:49:07,238 INFO L275 TraceCheckUtils]: 1: Hoare quadruple {334#true} {334#true} #58#return; {334#true} is VALID [2020-07-08 21:49:07,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-08 21:49:07,308 INFO L280 TraceCheckUtils]: 0: Hoare triple {334#true} ~m := #in~m; {334#true} is VALID [2020-07-08 21:49:07,309 INFO L280 TraceCheckUtils]: 1: Hoare triple {334#true} ~n := #in~n; {346#(= |addition_#in~n| addition_~n)} is VALID [2020-07-08 21:49:07,310 INFO L280 TraceCheckUtils]: 2: Hoare triple {346#(= |addition_#in~n| addition_~n)} assume !(0 == ~n); {347#(and (= |addition_#in~n| addition_~n) (not (= 0 |addition_#in~n|)))} is VALID [2020-07-08 21:49:07,311 INFO L280 TraceCheckUtils]: 3: Hoare triple {347#(and (= |addition_#in~n| addition_~n) (not (= 0 |addition_#in~n|)))} assume !(~n > 0); {348#(and (= |addition_#in~n| addition_~n) (<= addition_~n 0) (not (= 0 |addition_#in~n|)))} is VALID [2020-07-08 21:49:07,313 INFO L280 TraceCheckUtils]: 4: Hoare triple {348#(and (= |addition_#in~n| addition_~n) (<= addition_~n 0) (not (= 0 |addition_#in~n|)))} assume !(~n < 0); {349#(and (<= |addition_#in~n| 0) (not (= 0 |addition_#in~n|)))} is VALID [2020-07-08 21:49:07,314 INFO L280 TraceCheckUtils]: 5: Hoare triple {349#(and (<= |addition_#in~n| 0) (not (= 0 |addition_#in~n|)))} assume true; {349#(and (<= |addition_#in~n| 0) (not (= 0 |addition_#in~n|)))} is VALID [2020-07-08 21:49:07,315 INFO L275 TraceCheckUtils]: 6: Hoare quadruple {349#(and (<= |addition_#in~n| 0) (not (= 0 |addition_#in~n|)))} {338#(<= 0 main_~n~0)} #62#return; {335#false} is VALID [2020-07-08 21:49:07,316 INFO L263 TraceCheckUtils]: 0: Hoare triple {334#true} call ULTIMATE.init(); {334#true} is VALID [2020-07-08 21:49:07,316 INFO L280 TraceCheckUtils]: 1: Hoare triple {334#true} assume true; {334#true} is VALID [2020-07-08 21:49:07,317 INFO L275 TraceCheckUtils]: 2: Hoare quadruple {334#true} {334#true} #58#return; {334#true} is VALID [2020-07-08 21:49:07,317 INFO L263 TraceCheckUtils]: 3: Hoare triple {334#true} call #t~ret5 := main(); {334#true} is VALID [2020-07-08 21:49:07,317 INFO L280 TraceCheckUtils]: 4: Hoare triple {334#true} assume -2147483648 <= #t~nondet2 && #t~nondet2 <= 2147483647; {334#true} is VALID [2020-07-08 21:49:07,317 INFO L280 TraceCheckUtils]: 5: Hoare triple {334#true} ~m~0 := #t~nondet2; {334#true} is VALID [2020-07-08 21:49:07,318 INFO L280 TraceCheckUtils]: 6: Hoare triple {334#true} havoc #t~nondet2; {334#true} is VALID [2020-07-08 21:49:07,318 INFO L280 TraceCheckUtils]: 7: Hoare triple {334#true} assume !(~m~0 < 0 || ~m~0 > 1073741823); {334#true} is VALID [2020-07-08 21:49:07,318 INFO L280 TraceCheckUtils]: 8: Hoare triple {334#true} assume -2147483648 <= #t~nondet3 && #t~nondet3 <= 2147483647; {334#true} is VALID [2020-07-08 21:49:07,319 INFO L280 TraceCheckUtils]: 9: Hoare triple {334#true} ~n~0 := #t~nondet3; {334#true} is VALID [2020-07-08 21:49:07,319 INFO L280 TraceCheckUtils]: 10: Hoare triple {334#true} havoc #t~nondet3; {334#true} is VALID [2020-07-08 21:49:07,320 INFO L280 TraceCheckUtils]: 11: Hoare triple {334#true} assume !(~n~0 < 0 || ~n~0 > 1073741823); {338#(<= 0 main_~n~0)} is VALID [2020-07-08 21:49:07,320 INFO L263 TraceCheckUtils]: 12: Hoare triple {338#(<= 0 main_~n~0)} call #t~ret4 := addition(~m~0, ~n~0); {334#true} is VALID [2020-07-08 21:49:07,321 INFO L280 TraceCheckUtils]: 13: Hoare triple {334#true} ~m := #in~m; {334#true} is VALID [2020-07-08 21:49:07,321 INFO L280 TraceCheckUtils]: 14: Hoare triple {334#true} ~n := #in~n; {346#(= |addition_#in~n| addition_~n)} is VALID [2020-07-08 21:49:07,322 INFO L280 TraceCheckUtils]: 15: Hoare triple {346#(= |addition_#in~n| addition_~n)} assume !(0 == ~n); {347#(and (= |addition_#in~n| addition_~n) (not (= 0 |addition_#in~n|)))} is VALID [2020-07-08 21:49:07,323 INFO L280 TraceCheckUtils]: 16: Hoare triple {347#(and (= |addition_#in~n| addition_~n) (not (= 0 |addition_#in~n|)))} assume !(~n > 0); {348#(and (= |addition_#in~n| addition_~n) (<= addition_~n 0) (not (= 0 |addition_#in~n|)))} is VALID [2020-07-08 21:49:07,324 INFO L280 TraceCheckUtils]: 17: Hoare triple {348#(and (= |addition_#in~n| addition_~n) (<= addition_~n 0) (not (= 0 |addition_#in~n|)))} assume !(~n < 0); {349#(and (<= |addition_#in~n| 0) (not (= 0 |addition_#in~n|)))} is VALID [2020-07-08 21:49:07,325 INFO L280 TraceCheckUtils]: 18: Hoare triple {349#(and (<= |addition_#in~n| 0) (not (= 0 |addition_#in~n|)))} assume true; {349#(and (<= |addition_#in~n| 0) (not (= 0 |addition_#in~n|)))} is VALID [2020-07-08 21:49:07,326 INFO L275 TraceCheckUtils]: 19: Hoare quadruple {349#(and (<= |addition_#in~n| 0) (not (= 0 |addition_#in~n|)))} {338#(<= 0 main_~n~0)} #62#return; {335#false} is VALID [2020-07-08 21:49:07,327 INFO L280 TraceCheckUtils]: 20: Hoare triple {335#false} assume -2147483648 <= #t~ret4 && #t~ret4 <= 2147483647; {335#false} is VALID [2020-07-08 21:49:07,327 INFO L280 TraceCheckUtils]: 21: Hoare triple {335#false} ~result~0 := #t~ret4; {335#false} is VALID [2020-07-08 21:49:07,327 INFO L280 TraceCheckUtils]: 22: Hoare triple {335#false} havoc #t~ret4; {335#false} is VALID [2020-07-08 21:49:07,327 INFO L280 TraceCheckUtils]: 23: Hoare triple {335#false} assume !(~result~0 == ~m~0 - ~n~0); {335#false} is VALID [2020-07-08 21:49:07,328 INFO L280 TraceCheckUtils]: 24: Hoare triple {335#false} assume !false; {335#false} is VALID [2020-07-08 21:49:07,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-08 21:49:07,329 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [458671764] [2020-07-08 21:49:07,329 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-08 21:49:07,330 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-07-08 21:49:07,330 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855451640] [2020-07-08 21:49:07,332 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 25 [2020-07-08 21:49:07,332 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-08 21:49:07,332 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 7 states. [2020-07-08 21:49:07,360 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 25 edges. 25 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-08 21:49:07,360 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-08 21:49:07,361 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-08 21:49:07,361 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-08 21:49:07,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-07-08 21:49:07,362 INFO L87 Difference]: Start difference. First operand 37 states and 42 transitions. Second operand 7 states. [2020-07-08 21:49:07,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-08 21:49:07,681 INFO L93 Difference]: Finished difference Result 56 states and 64 transitions. [2020-07-08 21:49:07,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-08 21:49:07,681 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 25 [2020-07-08 21:49:07,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-08 21:49:07,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-07-08 21:49:07,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 64 transitions. [2020-07-08 21:49:07,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-07-08 21:49:07,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 64 transitions. [2020-07-08 21:49:07,696 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 6 states and 64 transitions. [2020-07-08 21:49:07,795 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 64 edges. 64 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-08 21:49:07,798 INFO L225 Difference]: With dead ends: 56 [2020-07-08 21:49:07,798 INFO L226 Difference]: Without dead ends: 32 [2020-07-08 21:49:07,801 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-07-08 21:49:07,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-07-08 21:49:07,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2020-07-08 21:49:07,855 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-08 21:49:07,855 INFO L82 GeneralOperation]: Start isEquivalent. First operand 32 states. Second operand 32 states. [2020-07-08 21:49:07,857 INFO L74 IsIncluded]: Start isIncluded. First operand 32 states. Second operand 32 states. [2020-07-08 21:49:07,857 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 32 states. [2020-07-08 21:49:07,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-08 21:49:07,861 INFO L93 Difference]: Finished difference Result 32 states and 33 transitions. [2020-07-08 21:49:07,861 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 33 transitions. [2020-07-08 21:49:07,862 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-08 21:49:07,862 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-08 21:49:07,863 INFO L74 IsIncluded]: Start isIncluded. First operand 32 states. Second operand 32 states. [2020-07-08 21:49:07,863 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 32 states. [2020-07-08 21:49:07,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-08 21:49:07,867 INFO L93 Difference]: Finished difference Result 32 states and 33 transitions. [2020-07-08 21:49:07,868 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 33 transitions. [2020-07-08 21:49:07,869 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-08 21:49:07,869 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-08 21:49:07,870 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-08 21:49:07,870 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-08 21:49:07,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-07-08 21:49:07,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 33 transitions. [2020-07-08 21:49:07,877 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 33 transitions. Word has length 25 [2020-07-08 21:49:07,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-08 21:49:07,878 INFO L479 AbstractCegarLoop]: Abstraction has 32 states and 33 transitions. [2020-07-08 21:49:07,878 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-08 21:49:07,879 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 32 states and 33 transitions. [2020-07-08 21:49:07,920 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 33 edges. 33 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-08 21:49:07,920 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 33 transitions. [2020-07-08 21:49:07,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-07-08 21:49:07,922 INFO L414 BasicCegarLoop]: Found error trace [2020-07-08 21:49:07,922 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-08 21:49:07,922 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-08 21:49:07,923 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-08 21:49:07,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-08 21:49:07,925 INFO L82 PathProgramCache]: Analyzing trace with hash 1044754306, now seen corresponding path program 1 times [2020-07-08 21:49:07,926 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-08 21:49:07,926 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [34725528] [2020-07-08 21:49:07,926 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-08 21:49:07,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-08 21:49:07,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-08 21:49:08,032 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-08 21:49:08,033 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-08 21:49:08,033 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-08 21:49:08,061 WARN L170 areAnnotationChecker]: ULTIMATE.initFINAL has no Hoare annotation [2020-07-08 21:49:08,061 WARN L170 areAnnotationChecker]: ULTIMATE.startENTRY has no Hoare annotation [2020-07-08 21:49:08,061 WARN L170 areAnnotationChecker]: ULTIMATE.startENTRY has no Hoare annotation [2020-07-08 21:49:08,062 WARN L170 areAnnotationChecker]: mainENTRY has no Hoare annotation [2020-07-08 21:49:08,062 WARN L170 areAnnotationChecker]: additionENTRY has no Hoare annotation [2020-07-08 21:49:08,062 WARN L170 areAnnotationChecker]: ULTIMATE.initEXIT has no Hoare annotation [2020-07-08 21:49:08,062 WARN L170 areAnnotationChecker]: L-1 has no Hoare annotation [2020-07-08 21:49:08,062 WARN L170 areAnnotationChecker]: L-1 has no Hoare annotation [2020-07-08 21:49:08,062 WARN L170 areAnnotationChecker]: L27 has no Hoare annotation [2020-07-08 21:49:08,062 WARN L170 areAnnotationChecker]: L13 has no Hoare annotation [2020-07-08 21:49:08,062 WARN L170 areAnnotationChecker]: ULTIMATE.startFINAL has no Hoare annotation [2020-07-08 21:49:08,063 WARN L170 areAnnotationChecker]: L27-1 has no Hoare annotation [2020-07-08 21:49:08,063 WARN L170 areAnnotationChecker]: L14 has no Hoare annotation [2020-07-08 21:49:08,063 WARN L170 areAnnotationChecker]: L14 has no Hoare annotation [2020-07-08 21:49:08,063 WARN L170 areAnnotationChecker]: L28 has no Hoare annotation [2020-07-08 21:49:08,063 WARN L170 areAnnotationChecker]: L28 has no Hoare annotation [2020-07-08 21:49:08,063 WARN L170 areAnnotationChecker]: L15 has no Hoare annotation [2020-07-08 21:49:08,063 WARN L170 areAnnotationChecker]: L17 has no Hoare annotation [2020-07-08 21:49:08,063 WARN L170 areAnnotationChecker]: L17 has no Hoare annotation [2020-07-08 21:49:08,064 WARN L170 areAnnotationChecker]: L31 has no Hoare annotation [2020-07-08 21:49:08,064 WARN L170 areAnnotationChecker]: L33 has no Hoare annotation [2020-07-08 21:49:08,064 WARN L170 areAnnotationChecker]: additionFINAL has no Hoare annotation [2020-07-08 21:49:08,064 WARN L170 areAnnotationChecker]: L18 has no Hoare annotation [2020-07-08 21:49:08,064 WARN L170 areAnnotationChecker]: L18 has no Hoare annotation [2020-07-08 21:49:08,064 WARN L170 areAnnotationChecker]: L20 has no Hoare annotation [2020-07-08 21:49:08,064 WARN L170 areAnnotationChecker]: L20 has no Hoare annotation [2020-07-08 21:49:08,065 WARN L170 areAnnotationChecker]: mainFINAL has no Hoare annotation [2020-07-08 21:49:08,065 WARN L170 areAnnotationChecker]: L33-1 has no Hoare annotation [2020-07-08 21:49:08,065 WARN L170 areAnnotationChecker]: additionEXIT has no Hoare annotation [2020-07-08 21:49:08,065 WARN L170 areAnnotationChecker]: additionEXIT has no Hoare annotation [2020-07-08 21:49:08,065 WARN L170 areAnnotationChecker]: additionEXIT has no Hoare annotation [2020-07-08 21:49:08,065 WARN L170 areAnnotationChecker]: L18-1 has no Hoare annotation [2020-07-08 21:49:08,065 WARN L170 areAnnotationChecker]: L21 has no Hoare annotation [2020-07-08 21:49:08,065 WARN L170 areAnnotationChecker]: L21 has no Hoare annotation [2020-07-08 21:49:08,066 WARN L170 areAnnotationChecker]: mainEXIT has no Hoare annotation [2020-07-08 21:49:08,066 WARN L170 areAnnotationChecker]: L33-2 has no Hoare annotation [2020-07-08 21:49:08,066 WARN L170 areAnnotationChecker]: L39-1 has no Hoare annotation [2020-07-08 21:49:08,066 WARN L170 areAnnotationChecker]: L21-1 has no Hoare annotation [2020-07-08 21:49:08,066 WARN L170 areAnnotationChecker]: L18-2 has no Hoare annotation [2020-07-08 21:49:08,066 WARN L170 areAnnotationChecker]: L34 has no Hoare annotation [2020-07-08 21:49:08,066 WARN L170 areAnnotationChecker]: L34 has no Hoare annotation [2020-07-08 21:49:08,066 WARN L170 areAnnotationChecker]: L39-2 has no Hoare annotation [2020-07-08 21:49:08,067 WARN L170 areAnnotationChecker]: L21-2 has no Hoare annotation [2020-07-08 21:49:08,067 WARN L170 areAnnotationChecker]: L18-3 has no Hoare annotation [2020-07-08 21:49:08,067 WARN L170 areAnnotationChecker]: L37 has no Hoare annotation [2020-07-08 21:49:08,067 WARN L170 areAnnotationChecker]: L39 has no Hoare annotation [2020-07-08 21:49:08,067 WARN L170 areAnnotationChecker]: L39 has no Hoare annotation [2020-07-08 21:49:08,067 WARN L170 areAnnotationChecker]: L39-3 has no Hoare annotation [2020-07-08 21:49:08,067 WARN L170 areAnnotationChecker]: L21-3 has no Hoare annotation [2020-07-08 21:49:08,068 WARN L170 areAnnotationChecker]: L40 has no Hoare annotation [2020-07-08 21:49:08,068 WARN L170 areAnnotationChecker]: L40 has no Hoare annotation [2020-07-08 21:49:08,068 WARN L170 areAnnotationChecker]: L41 has no Hoare annotation [2020-07-08 21:49:08,068 WARN L170 areAnnotationChecker]: L43 has no Hoare annotation [2020-07-08 21:49:08,068 WARN L170 areAnnotationChecker]: L43 has no Hoare annotation [2020-07-08 21:49:08,068 INFO L163 areAnnotationChecker]: CFG has 0 edges. 0 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. 0 times interpolants missing. [2020-07-08 21:49:08,072 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.07 09:49:08 BoogieIcfgContainer [2020-07-08 21:49:08,072 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-08 21:49:08,075 INFO L168 Benchmark]: Toolchain (without parser) took 3523.82 ms. Allocated memory was 140.0 MB in the beginning and 243.3 MB in the end (delta: 103.3 MB). Free memory was 105.3 MB in the beginning and 102.7 MB in the end (delta: 2.6 MB). Peak memory consumption was 105.9 MB. Max. memory is 7.1 GB. [2020-07-08 21:49:08,076 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 140.0 MB. Free memory is still 123.0 MB. There was no memory consumed. Max. memory is 7.1 GB. [2020-07-08 21:49:08,077 INFO L168 Benchmark]: CACSL2BoogieTranslator took 256.08 ms. Allocated memory is still 140.0 MB. Free memory was 104.9 MB in the beginning and 95.1 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. [2020-07-08 21:49:08,078 INFO L168 Benchmark]: Boogie Preprocessor took 32.79 ms. Allocated memory is still 140.0 MB. Free memory was 95.1 MB in the beginning and 93.7 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-07-08 21:49:08,079 INFO L168 Benchmark]: RCFGBuilder took 540.22 ms. Allocated memory was 140.0 MB in the beginning and 205.0 MB in the end (delta: 65.0 MB). Free memory was 93.7 MB in the beginning and 162.8 MB in the end (delta: -69.1 MB). Peak memory consumption was 14.5 MB. Max. memory is 7.1 GB. [2020-07-08 21:49:08,080 INFO L168 Benchmark]: TraceAbstraction took 2688.66 ms. Allocated memory was 205.0 MB in the beginning and 243.3 MB in the end (delta: 38.3 MB). Free memory was 162.8 MB in the beginning and 102.7 MB in the end (delta: 60.0 MB). Peak memory consumption was 98.3 MB. Max. memory is 7.1 GB. [2020-07-08 21:49:08,084 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - AssertionsEnabledResult: Assertions are enabled Assertions are enabled - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 140.0 MB. Free memory is still 123.0 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 256.08 ms. Allocated memory is still 140.0 MB. Free memory was 104.9 MB in the beginning and 95.1 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 32.79 ms. Allocated memory is still 140.0 MB. Free memory was 95.1 MB in the beginning and 93.7 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 540.22 ms. Allocated memory was 140.0 MB in the beginning and 205.0 MB in the end (delta: 65.0 MB). Free memory was 93.7 MB in the beginning and 162.8 MB in the end (delta: -69.1 MB). Peak memory consumption was 14.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2688.66 ms. Allocated memory was 205.0 MB in the beginning and 243.3 MB in the end (delta: 38.3 MB). Free memory was 162.8 MB in the beginning and 102.7 MB in the end (delta: 60.0 MB). Peak memory consumption was 98.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 43]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L27] int m = __VERIFIER_nondet_int(); VAL [__VERIFIER_nondet_int()=0, m=0] [L28] COND FALSE !(m < 0 || m > 1073741823) VAL [m=0] [L33] int n = __VERIFIER_nondet_int(); VAL [__VERIFIER_nondet_int()=1, m=0, n=1] [L34] COND FALSE !(n < 0 || n > 1073741823) VAL [m=0, n=1] [L39] CALL, EXPR addition(m,n) VAL [\old(m)=0, \old(n)=1] [L14] COND FALSE !(n == 0) VAL [\old(m)=0, \old(n)=1, m=0, n=1] [L17] COND TRUE n > 0 VAL [\old(m)=0, \old(n)=1, m=0, n=1] [L18] CALL, EXPR addition(m+1, n-1) VAL [\old(m)=1, \old(n)=0] [L14] COND TRUE n == 0 VAL [\old(m)=1, \old(n)=0, m=1, n=0] [L15] return m; VAL [\old(m)=1, \old(n)=0, \result=1, m=1, n=0] [L18] RET, EXPR addition(m+1, n-1) VAL [\old(m)=0, \old(n)=1, addition(m+1, n-1)=1, m=0, n=1] [L18] return addition(m+1, n-1); VAL [\old(m)=0, \old(n)=1, \result=1, addition(m+1, n-1)=1, m=0, n=1] [L39] RET, EXPR addition(m,n) VAL [addition(m,n)=1, m=0, n=1] [L39] int result = addition(m,n); VAL [addition(m,n)=1, m=0, n=1, result=1] [L40] COND FALSE !(result == m - n) VAL [m=0, n=1, result=1] [L43] __VERIFIER_error() VAL [m=0, n=1, result=1] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 42 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 2.5s, OverallIterations: 3, TraceHistogramMax: 2, AutomataDifference: 1.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 70 SDtfs, 85 SDslu, 212 SDs, 0 SdLazy, 158 SolverSat, 11 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 28 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=42occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 83 NumberOfCodeBlocks, 83 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 47 ConstructedInterpolants, 0 QuantifiedInterpolants, 3509 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...